I recently bought a similar variac, china proceed as well, mine went for under $ 90 so it's even cheaper than that one. Works a dandy for my application(tube amp testing/repair). I watch the commuter as I turn it and I see no sparks or anything, so I'm pretty happy with the cost/benefit.Metered Variac - Variable AC Output Transformer 20 Amp - eBay (item 380125631232 end time Jun-19-09 05:16:09 PDT)
Just wondering if anyone has any experience with these before I buy one. Thanks!